29th Symposium on Fusion Technology (SOFT 2016)

P3.028 Commissioning of the heating neutral beam injector on the TCV tokamak

7 Sep 2016, 11:00

1h 20m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 28

Poster B. Plasma Heating and Current Drive P3 Poster session

Speaker

Damien Fasel (SB-SPC)

Description

The TCV tokamak infrastructure has been recently adapted to leave access for a neutral beam (NB) injector capable of 1MW of neutral power during 2sec into the TCV plasma. BINP has been in charge to design and to procure this equipment, taking care of the experimental constraints imposed both by the future physics objectives of TCV, as by the mechanical requirements complying with the tight space available for installing the material inside the tokamak building. The development and design phase, as the preparation work have been described in [1]&[2]. This paper will focus on the commissioning description of the NBH system at the SPC site and on the presentation of the main results obtained during the first operation phase with TCV. The steps followed from the installation of the main auxiliaries (HVPS, RF PS, cooling circuits, cryogenics equipment etc.) up to the final acceptance tests on the plasma targets will be detailed. The measurements and the associated protection interlocks acting on the TCV control system will be described, including also the human safety rules imposed to comply with a safe operation of the injector. To conclude, the further stage to finalize the integration of the NBH on TCV will be briefly developed. This work was supported in part by the Swiss National Science Foundation. [1] A N. Karpushov et al., Fusion Engineering and Design, Vol. 96-97, October 2015, p.493-497 [2] D. Fasel et al., Fusion Engineering and Design, Vol. 96-97, October 2015, p.447-451